King's Gap Hollow Trail is a hiking trail in Cumberland County, Pennsylvania. It is within King's Gap Environmental Education Center. It is 0.9 miles long and begins at 1,270 feet altitude. Traveling the entire trail is 1.9 miles with a total elevation gain of 421 feet. Near the trailhead there are parkings. The Black Gum Parking can be seen along the trail. Near the end of the trail is water.